Answer:
B: Skin
Explanation:
Physical barrier, Brainliest?
Answer:
I would say withdrawal.
Explanation:
Just an educated guess this time
warm ups and cool downs are necessary in an exercise because they help the body get through the exercise easier.
warm ups-
•Jumping jacks, start slow then faster.
•Walking or slow jogs, same with jumping jacks, start up slow then faster.
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cool downs-
•Cool down after runs, walk for 10 minutes
•Cool down after jumping jacks, skip jump for 10 minutes
Answer/Explanation:
It gives you a goal of how hard you want work. Which will increase the amount of calories burned and strength earned. But it is also limited so that you don't overdue yourself; this will cause health issues in the future.
C. Keep materials in unlabeled containers